Abstract: A power charging system for charging portable electric devices. The power charging system includes a plurality of transformers for transforming a plurality of different input voltages into a standard DC (direct current) voltage. The charging system also includes a power cord for inputting and outputting the standard DC voltage. The charging system also includes a plurality of converters for converting the standard DC voltage into the working voltage of the portable electric devices. Users connect the corresponding converters to the power cord and then connect the power cord to any one of the transformers to use the standard DC voltage to charge the portable electric devices.

Abstract: A thin line jack expansion module clips onto and electrically connects to a thin line expansion cable. The thin line expansion cable has signal lines for transmitting communications signals. The expansion module has an internal module and an external module. The internal module has a cable bay for accommodating the thin line expansion cable, cable contacts in the cable bay for establishing electrical connections with the signal lines of the thin line expansion cable, and a jack. The jack is electrically connected to the cable contacts. The external module clips onto the internal module and at least partially covers the cable bay. When the thin line expansion cable is set in the cable bay, and the external module is snapped onto the internal module, the cable contacts will electrically connect the jack to the signal lines within the thin line expansion cable.